Flutter Experts in Berlin

• Acted as technical consultant to optimize multi-layer ensemble models combining ResNet, CNN-BiGRU-Attention, and XGBoost.
• Guided implementation of a Logistic Regression meta-learner to solve class imbalance problems, achieving 92.86% accuracy and 0.9644 AUC on PTB-XL and Chapman-Shaoxing datasets.

• Context: Healthcare and laboratory teams required faster document analysis, treatment-planning support, and reliable AI workflows for MR/VR-assisted operations.
• Contribution: Built the AI healthcare platform, model/agent workflows, VR-glasses deployment platform, REST APIs, Next.js/React interfaces, and CI/CD pipelines.
• Impact: Delivered a production-ready AI product foundation that improved clinical document review, supported laboratory automation, and made VR fleet deployment manageable across environments.

Tech: TypeScript, Next.js, Node.js, React, Java, Spring Boot, Python, PyTorch, TensorFlow, Docker, PostgreSQL, OpenAPI, GitLab, GitHub Actions.

• Held two on-site guest lecture sessions for Product Management students covering “Agile Values Principles” and “Implementing Agile Processes”

• Developed a Flutter app for eID ID card logins
• Focus: Flutter, iOS, eID, AusweisAppSDK, Mason, Keycloak, Agentic Coding, Arc42, Jenkins

• Fundamentals of AI and LLMs
• Build and deploy AI powered implementations with ChatGPT and Gemini

• Worked with multiple clients on short- and mid-term engagements, leading the delivery of data-driven SaaS and analytics solutions.
• Coached and supported cross-functional teams with a strong focus on execution, working closely with senior and C-level stakeholders through regular alignment and decision-making.
• Focused on automating data workflows, integrating backend systems, and turning technical requirements into scalable product outcomes.
• Led delivery of automated data capabilities across client platforms, streamlining customer data integration and reducing manual processing by up to 60% within 6 months.
• Translated and aligned technical and business requirements for Shipzero into prioritized user stories, accelerating delivery and enabling ~€450K in annualized cost savings.

• Optimized the Amp healthcare app alongside a senior developer, specifically enhancing data caching mechanisms which led to a 25% improvement in load times.
• Applied MVI architecture, resulting in a 30% decrease in bugs and streamlining testing processes.
• Implemented CI/CD with Bitrise, reducing deployment sizes from 120MB to 104MB.
• Led the migration of 40% of the Java codebase to Kotlin.
• Achieved 85% unit test coverage.

• Led engineering execution: roadmap planning, capacity alignment, risk management, dependencies, and delivery tracking.
• Consolidated multiple payroll product lines into a unified SaaS platform on Dynamics 365 Business Central, enabling scalable post-merger operations and reducing operational complexity across the portfolio.
• Restructured engineering and product teams in a remote-first setting across Germany, Austria and Poland, consisting of five cross-functional units: compliance/enabling, platform, DevOps and two stream-aligned teams with total FTE depending on phase of reorganisation.
• Rebuilt the mid-level leadership layer and mentored engineering leaders, establishing a leadership pipeline and strengthening architectural decision-making across teams for scalable growth, delivery ownership and predictability.
• Designed platform foundations and system boundaries using Team Topologies aligned structures, enabling scalable ownership, clear interfaces and parallel development across distributed teams.
• Spearheaded AI transformation by implementing AI-assisted SDLC practices using SpecKit and GitHub Actions for automated, executable specifications, while delivering agentic product capabilities by securely exposing platform data and services to AI agents and copilots via RAG-based retrieval pipelines and MCP-style extensions.
• Drove modularisation of tightly coupled legacy logic into independently deployable services, improving maintainability, testability and architectural clarity while preserving continuity through targeted, low-risk extraction rather than full rewrites.
• Established observability, CI/CD and DevOps governance as platform capabilities, increasing automated compliance gates from 25% to 75% and improving deployment cadence by 40% across 15+ product versions.
• Improved operational resilience using DORA-aligned practices (lead time ↓50%, SaaS MTTR ↓85%), strengthening reliability and reducing support overhead.
• Coordinated engineering recovery for the German payroll platform during a company-wide P0 ransomware incident; restored platform continuity within 72h, validated data integrity, and rolled out hardened runbooks and automated recovery playbooks.
• Responsible for budget compliance and cost oversight in Engineering, with limited P&L responsibility and participating in the annual COGS/OPEX/CAPEX planning cycle.

• Development of various backends (PHP) in a microservice architecture with STRENGTHS
• Development of administration interfaces with Laravel Filament diligent consistent agile
• Integration of third-party providers via REST interfaces patient attention to detail motivating

• Train and optimize MAVAE/VAE models in PyTorch to detect anomalies in multivariate time-series sensor data.
• Design preprocessing workflows and evaluation pipelines to improve model accuracy and robustness.
• Benchmark MAVAE performance against baseline statistical and deep learning approaches, presenting comparative insights.
• Collaborate with research supervisors to refine hypotheses and translate experimental findings into deployable research outputs.

• Worked on ideation phase through deployment; managed the team and implemented the core architecture
• Developed Firsty Travel eSim: native eSIM installation with a single click; seamless user authentication; real-time data synchronization; intuitive user interface design; advanced security protocols; integration with third-party services; high performance and scalability
• Developed WIO Business banking app: spend, save, invest, and control entire transaction process
• Technologies: Flutter, iOS, Android Studio

• Technical Leadership & SW Architecture: Conducting trade-off analyses for technology stacks and leading the design and implementation of the software architecture, including mobile and backend solutions. Facilitating Event Storming workshops for DDD and software architecture.
• Strategic Direction & Organizational Development: Playing a key role in defining the strategic direction of the product and organization, exploring new models such as steward ownership.
• Lean Startup & Agile Development: Introducing Lean and Agile principles, implementing lean prototypes, and ensuring adherence to Lean Startup processes, iterative development from product/solution fit to product/market fit.
• Team Building & Collaboration: Facilitating workshops, retrospectives and future workshops to collaboratively develop tactics and strategies.
• Technologies: Flutter, JS/TS, React, Google Cloud, Firebase, Android, iOS.
• Organizational Methods: Lean startup, lean canvas, lean agile, event storming, retrospectives.